Mazda GE 6V 15W E10 Projector Bulb 1802.3 New Lamp The original box has a lot of shelf wear, but this bulb is new. The box is also marked, "Cyl. Fil. Plat", which may possibly be interpreted as cylindrical in shape with a platinum filament. It also has what looks like a modified base in which a threaded sleeve has been welded over the original. It measures about 12mm in diameter and has straight threads. The threads look to us to be fine threads. We only have the accuracy of a tape measure. We have not been able to determine the exact application of this bulb and so please be sure it will work with your equipment before purchasing. It only comes with what is shown in the pictures. S044-62 d 864198